Speaker box



FIG. 1 is an enlarged perspective view of a speaker box;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is an enlarged perspective view thereof with an arm of the speaker box in an upright position.

The broken lines depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a speaker box, as shown and described. 